Multifunctional universal serial bus wireless keyboard

Abstract

A multifunctional universal serial bus (USB) wireless keyboard for operating a control function of a personal computer (PC) is presented. A main body of the keyboard includes a plurality of keys, a signal sending module, and a coding circuit. When the key is pressed, the coding circuit generates a corresponding character signal, and the signal sending module converts the character signal into a radio signal and sends the radio signal. A receiving module receives the radio signal, and transmits the radio signal to the PC. The receiving module further includes a clock control pin and a USB module electrically connected to the PC. An embedded controller is disposed in the PC and electrically connected to the receiving module through the clock control pin, and sends a corresponding function trigger signal to a south bridge chip set according to a pressing time of the received radio signal.

1. A multifunctional universal serial bus (USB) wireless keyboard for operating a control function of a personal computer (PC), comprising:
 a main body of the keyboard, having a plurality of keys, a signal sending module, and a coding circuit, wherein when the key is pressed, the coding circuit generates a corresponding character signal, and the signal sending module converts the character signal into a radio signal and sends the radio signal; 
 a receiving module, used for receiving the radio signal and transmitting the radio signal to the PC, wherein a USB module of the receiving module further comprises a clock control pin, and is electrically connected to the PC; and 
 an embedded controller, disposed in the PC, the embedded controller electrically connected to the receiving module via the clock control pin, and used for sending a corresponding function trigger signal to a south bridge chip set according to a pressing time of the received radio signal. 
 
     
     
       2. The multifunctional USB wireless keyboard according to  claim 1 , wherein the USB is a mini-A type or a mini-B type. 
     
     
       3. The multifunctional USB wireless keyboard according to  claim 1 , wherein the control function is restoration function of a basic input-output system (BIOS) in the PC, a data deletion function in a complementary metal-oxide-semiconductor (CMOS), or a power-on function.